212 lines
5.1 KiB
C++
212 lines
5.1 KiB
C++
//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of NVIDIA CORPORATION nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Copyright (c) 2008-2019 NVIDIA Corporation. All rights reserved.
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// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
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// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
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#ifndef PX_CORE_UTILTY_TYPES_H
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#define PX_CORE_UTILTY_TYPES_H
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/** \addtogroup common
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@{
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*/
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#include "foundation/PxAssert.h"
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#include "foundation/PxMemory.h"
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#if !PX_DOXYGEN
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namespace physx
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{
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#endif
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struct PxStridedData
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{
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/**
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\brief The offset in bytes between consecutive samples in the data.
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<b>Default:</b> 0
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*/
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PxU32 stride;
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const void* data;
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PxStridedData() : stride( 0 ), data( NULL ) {}
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template<typename TDataType>
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PX_INLINE const TDataType& at( PxU32 idx ) const
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{
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PxU32 theStride( stride );
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if ( theStride == 0 )
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theStride = sizeof( TDataType );
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PxU32 offset( theStride * idx );
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return *(reinterpret_cast<const TDataType*>( reinterpret_cast< const PxU8* >( data ) + offset ));
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}
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};
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template<typename TDataType>
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struct PxTypedStridedData
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{
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PxU32 stride;
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const TDataType* data;
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PxTypedStridedData()
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: stride( 0 )
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, data( NULL )
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{
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}
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};
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struct PxBoundedData : public PxStridedData
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{
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PxU32 count;
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PxBoundedData() : count( 0 ) {}
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};
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template<PxU8 TNumBytes>
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struct PxPadding
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{
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PxU8 mPadding[TNumBytes];
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PxPadding()
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{
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for ( PxU8 idx =0; idx < TNumBytes; ++idx )
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mPadding[idx] = 0;
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}
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};
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template <PxU32 NB_ELEMENTS> class PxFixedSizeLookupTable
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{
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//= ATTENTION! =====================================================================================
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// Changing the data layout of this class breaks the binary serialization format. See comments for
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// PX_BINARY_SERIAL_VERSION. If a modification is required, please adjust the getBinaryMetaData
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// function. If the modification is made on a custom branch, please change PX_BINARY_SERIAL_VERSION
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// accordingly.
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//==================================================================================================
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public:
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PxFixedSizeLookupTable()
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: mNbDataPairs(0)
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{
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}
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PxFixedSizeLookupTable(const PxEMPTY) {}
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PxFixedSizeLookupTable(const PxReal* dataPairs, const PxU32 numDataPairs)
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{
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PxMemCopy(mDataPairs,dataPairs,sizeof(PxReal)*2*numDataPairs);
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mNbDataPairs=numDataPairs;
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}
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PxFixedSizeLookupTable(const PxFixedSizeLookupTable& src)
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{
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PxMemCopy(mDataPairs,src.mDataPairs,sizeof(PxReal)*2*src.mNbDataPairs);
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mNbDataPairs=src.mNbDataPairs;
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}
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~PxFixedSizeLookupTable()
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{
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}
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PxFixedSizeLookupTable& operator=(const PxFixedSizeLookupTable& src)
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{
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PxMemCopy(mDataPairs,src.mDataPairs,sizeof(PxReal)*2*src.mNbDataPairs);
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mNbDataPairs=src.mNbDataPairs;
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return *this;
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}
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PX_FORCE_INLINE void addPair(const PxReal x, const PxReal y)
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{
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PX_ASSERT(mNbDataPairs<NB_ELEMENTS);
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mDataPairs[2*mNbDataPairs+0]=x;
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mDataPairs[2*mNbDataPairs+1]=y;
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mNbDataPairs++;
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}
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PX_FORCE_INLINE PxReal getYVal(const PxReal x) const
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{
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if(0==mNbDataPairs)
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{
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PX_ASSERT(false);
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return 0;
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}
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if(1==mNbDataPairs || x<getX(0))
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{
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return getY(0);
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}
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PxReal x0=getX(0);
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PxReal y0=getY(0);
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for(PxU32 i=1;i<mNbDataPairs;i++)
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{
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const PxReal x1=getX(i);
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const PxReal y1=getY(i);
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if((x>=x0)&&(x<x1))
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{
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return (y0+(y1-y0)*(x-x0)/(x1-x0));
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}
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x0=x1;
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y0=y1;
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}
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PX_ASSERT(x>=getX(mNbDataPairs-1));
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return getY(mNbDataPairs-1);
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}
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PxU32 getNbDataPairs() const {return mNbDataPairs;}
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void clear()
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{
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memset(mDataPairs, 0, NB_ELEMENTS*2*sizeof(PxReal));
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mNbDataPairs = 0;
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}
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PX_FORCE_INLINE PxReal getX(const PxU32 i) const
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{
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return mDataPairs[2*i];
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}
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PX_FORCE_INLINE PxReal getY(const PxU32 i) const
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{
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return mDataPairs[2*i+1];
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}
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PxReal mDataPairs[2*NB_ELEMENTS];
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PxU32 mNbDataPairs;
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PxU32 mPad[3];
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};
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#if !PX_DOXYGEN
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} // namespace physx
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#endif
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/** @} */
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#endif
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